title: Pagetoid changes in a heterotopic center of ossification. A case report.
mesh_terms: D000368:Aged; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000473:pathology*; D008023:Ligaments, Articular / Q000000981:diagnostic imaging / Q000473:pathology*; D008297:Male; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging; D010001:Osteitis Deformans / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography